Adverse Possession
Adverse possession is the legal principle that allows someone to claim ownership of land they’ve been openly using — without permission — for a long enough period of time, essentially taking it from the legal owner.
Yes, someone can legally steal your land. It sounds outrageous, but it’s real law in all 50 states. The required time period varies — 5 years in California, 10 years in New York, 20 years in New Jersey — but the concept is the same everywhere. If someone uses your land openly, continuously, and without your permission for the statutory period, they can file a claim and become the legal owner.
The Five Requirements
To claim adverse possession, the occupier must prove their use was: hostile (without the owner’s permission), actual (they physically used the land), open and notorious (visible to anyone — not hidden), exclusive (they treated it as their own), and continuous for the full statutory period. Miss any one of these and the claim fails.
The most common scenario? A neighbor builds a fence 3 feet over the property line and maintains that strip for 15 years. They mow it, plant on it, maybe even build a shed. After the statutory period, they can petition the court for ownership of that 3-foot strip.
Watch out: You can defeat an adverse possession claim simply by giving written permission. A simple letter saying “I allow you to use this strip of my land” destroys the “hostile” requirement. Some attorneys recommend sending these letters every few years to any neighbor who appears to be using your land. A $400-$800 property survey can identify encroachments before they become adverse possession claims.
The financial stakes are real. A neighbor who adversely possesses a 5-foot strip along a 150-foot property boundary claims 750 square feet of your land. At $50/sq ft for residential land, that’s $37,500 in property value transferred to someone who never paid for it. In high-value markets, the losses are dramatically higher. Prevention is always cheaper than litigation.
If you’re buying property with boundary uncertainties, get a fresh survey and compare it to the deed description. Ask the title company about any potential adverse possession risks. Title insurance may or may not cover adverse possession claims — check your policy carefully. Read more about boundary issues in the glossary.
Can I claim adverse possession on abandoned property?
Technically yes, but it’s harder than it sounds. You must meet all five requirements for the full statutory period — and if the owner shows up even once to assert their rights during that time, the clock resets. Many states also require you to pay property taxes on the land during the possession period. Consult a real estate attorney before attempting this — it’s a legitimate legal strategy but it’s complex and risky.